202 ACADEMY OF NATURAL SCIENCES 



2. E. 4-NOTATUS. — Black ; antenna), two spots on each cly- 

 trum, and tarsi rufous. 



Body black: antenna) entirely rufous; thorax simple : elytra 

 with strijE of punctures ; a large rounded rufous spot at the base 

 of each, chiefly on the humerus, and a rufous elongated, obsolete 

 une on the posterior declivity : tarsi rufous. 



Length less than one-tenth of an inch. 



MACRONYCHUS Mull. 



M. (iL.\r.R.\TUS. — Blackish; feet slender; antennae pale ru- 

 fous. 



Macroriychiis r/Iahnitus Knoch, J. F. Melsheimer. 



Body entirely blackish; slightly hairy : thorax [188] with a 

 slightly elevated line each side at base, hardly extending to the 

 middle : elytra with scries of large punctures not very deeply 

 impressed; a more distinct series of hairs near the suture; an 

 elevated, cronate, submarginal line extends from the humerus, 

 but is abbreviated before the tip : feet elongated. 



Length rather more than one-tenth of an inch. 



HYDBOPHILUS Linn. Fabr. 



1. H. ROTUNDUS. — Very convex, oval; elytra destitute of 

 striae, excepting the sutural one. 



Body black, polished, with very numerous, minute, regular 

 punctures : palpi piceous : thorax with the lateral margin pice- 

 oiis; this color extends a short distance on the basal margin: 

 elytra very obscurely piceous on the lateral margin, without any 

 appearance of strioB or large impressed punctures; the sutural 

 striic very obvious, not reaching the base, generally hardly sur- 

 passing the middle. 



liCngth three-tenths of an inch. 



For this species I am indebted to Dr. J. F. Melsheimer, who 

 informed me that it inhabits " marshy places in forests near the 

 tirst ridge of the 8outh Mountains, in Adams County, Pennsyl- 

 vania." I also found it in Georgia. It resembles fflohom.<i nob., 

 F)ut is less convex, and is destitute of strise of the elytra. 



[Belongs to I'hUhydrus. — Lee] 



2. H. STRIATUS. — Dull testaceous ; head dark greenish ; ely- 

 tra striate, and with small remote black spots. 



[Vol. Y- 



